Thanks to those who have participated in the Social Images Beta, the quality of feedback has been outstanding.
Given the feedback, I've decided to change the way the taxonomy works in regards to boards and switch these to user defined tags (DNN core taxonomy). This will provide a more verbose experience that allows crowd sourcing for categorisation. On top of this, I will be adding a subscription feature on these tags so that you can receive updates when new images are posted to those categories.
Due to these changes, I'll be releasing another Beta which converts existing boards to tags and takes advantage of this new functionality. This beta will be released before the end of the month.